Author: C. T. ChangPublisher:
ISBN:
Category : Shear flow
Languages : en
Pages : 94
Book Description
Experimental Reacting Hydrogen Shear Layer Data at High Subsonic Mach Number
Author: C. T. ChangPublisher:
ISBN:
Category : Shear flow
Languages : en
Pages : 94
Book Description
Experimental Reacting Hydrogen Shear Layer Data at High Subsonic Mach Number
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781722388072
Category :
Languages : en
Pages : 90
Book Description
The flow in a planar shear layer of hydrogen reacting with hot air was measured with a two-component laser Doppler velocimeter (LDV) system, a schlieren system, and OH fluorescence imaging. It was compared with a similar air-to-air case without combustion. The high-speed stream's flow speed was about 390 m/s, or Mach 0.71, and the flow speed ratio was 0.34. The results showed that a shear layer with reaction grows faster than one without; both cases are within the range of data scatter presented by the established data base. The coupling between the streamwise and the cross-stream turbulence components inside the shear layers was low, and reaction only increased it slightly. However, the shear layer shifted laterally into the lower speed fuel stream, and a more organized pattern of Reynolds stress was present in the reaction shear layer, likely as a result of the formation of a larger scale structure associated with shear layer corrugation from heat release. Dynamic pressure measurements suggest that coherent flow perturbations existed inside the shear layer and that this flow became more chaotic as the flow advected downstream. Velocity and thermal variable values are listed in this report for a computational fluid dynamics (CFD) benchmark. Chang, C. T. and Marek, C. J. and Wey, C. and Wey, C. C. Glenn Research Center...
Symposium on Turbulent Shear Flows
Author: NASA Technical Memorandum
Author: Structure of a Planar Reacting Shear Layer Using Hydrocarbon Fuels
Author: Lyle M. PickettScientific and Technical Aerospace Reports
Author: Comparison of Reacting and Non-reacting Shear Layers at a High Subsonic Mach Number
Author: C. T. ChangPublisher:
ISBN:
Category : Shear (Mechanics)
Languages : en
Pages : 14
Book Description
The flow field in a hydrogen-fueled planar reacting shear layer was measured with an LDV system and is compared with a similar air to air case without combustion. Measurements were made with a speed ratio of 0.34 with the highspeed stream at Mach 0.71. They show that the shear layer with reaction grows faster than one without, and both cases are within the range of data scatter presented by the established database. The coupling between the streamwise and the cross-stream turbulence components inside the shear layer is slow, and reaction only increased it slightly. However, a more organized pattern of the Reynolds stress is present in the reacting shear layer, possibly as a result of larger scale structure formation in the layer associated with heat release.
Author: Dongshin Shin
Author: 
Author: Richard A. Jones